NAS backup using NDMP protocol.

Hi folks, 

I need to understand a little bit about NAS backup using NDMP protocol. 

I have read this article https://www.veeam.com/blog/nas-data-protection-best-practices.html written by Matt Crape. 

In particular I want discuss about third model

• Three-way model: In this model, backup data flows from NAS to the backup server, which then sends that data to the backup device. This model requires three-way communication between NAS, the backup server and the backup device. Some advantages of this model are that it allows for better control over the backup process and greater scalability. However, this option may also introduce additional load on your network.

If I understood VBR Server manage backup, after connecting with NAS, and write on a primary repository.  

HAve you experience in this model backup? 

I will try to push the customer to use classic file backup starting from here https://helpcenter.veeam.com/docs/backup/hyperv/file_share_support.html?ver=120 

But if our client want use NDMP I need have a prompt reply. 

Thanks for your feedback.